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The square of 307 is palindromic. El Salvador has 307 kilometers of coastline. 307 has period length 1^{3} + 5^{3} + 3^{3}. The Area Code for Wyoming is 307. The smallest number that is the sum of any set of primes containing all digits: 2 + 5 + 41 + 67 + 83 + 109 = 307. [Gallardo] In the movie The Odd Couple, when Felix checks into a hotel, the first room the desk clerk tries to assign him is 307. [Litman] The largest number that you can type in Excel is 9.999 * 10^{307}. If you type in a larger number, Excel will treat it as a character string. [Andrew] From 1967 to 1972, The Grass Roots set a record for being on the Billboard charts 307 straight weeks. Curious Book Shop is a used and rare book store located in downtown East Lansing, Michigan (307 East Grand River Avenue). Smallest of the first case of seven consecutive primes that remain prime if you eliminate their first digit. [Loungrides] The smallest and only known nonpalindromic prime whose square is a palindrome number, i.e., 94249. [Loungrides] The smallest prime whose reversal is a Kaprekar number. [Loungrides]
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